Che Mohd Ruzaidi Ghazali
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Che Mohd Ruzaidi Ghazali
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Che Mohd Ruzaidi, Ghazali
Alternative Name
Ruzaidi, C. M.
Ruzaidi, Ghazali Che Mohd
Mohd Ruzaidi, Che
Ruzaidi, Ghazali
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15760587000

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Fly ash porous material using geopolymerization process for high temperature exposure

2012 , Mohd. Mustafa Al Bakri Abdullah , Liyana Jamaludin , Kamarudin Hussin , Mohamed Bnhussain , Che Mohd Ruzaidi Ghazali , Mohd Izzat Ahmad

This paper presents the results of a study on the effect of temperature on geopolymers manufactured using pozzolanic materials (fly ash). In this paper, we report on our investigation of the performance of porous geopolymers made with fly ash after exposure to temperatures from 600 °C up to 1000 °C. The research methodology consisted of pozzolanic materials (fly ash) synthesized with a mixture of sodium hydroxide and sodium silicate solution as an alkaline activator. Foaming agent solution was added to geopolymer paste. The geopolymer paste samples were cured at 60 °C for one day and the geopolymers samples were sintered from 600 °C to 1000 °C to evaluate strength loss due to thermal damage. We also studied their phase formation and microstructure. The heated geopolymers samples were tested by compressive strength after three days. The results showed that the porous geopolymers exhibited strength increases after temperature exposure.

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Study of a palm slag-filled friction composite for brake pad

2014 , Che Mohd Ruzaidi Ghazali

Since the use of asbestos was banned in all types of products and applications due to its carcinogenic nature, researchers worldwide has conducted extensive research and development activities with the goal of identifying alternative and safe materials. This research work was conducted with the main objective of determining the potential and capability of using palm slag, an industrial solid waste that is abundant in Malaysia, as an alternative filler material in friction composites for brake pad applications. The other main ingredient that were used to develop friction composites in this research were, phenolic resin as a binder, graphite as a lubricant, alumina as an abrasive and steel fibers to provide reinforcement. The mixture was hand press compacted to have the 10 mm diameter cylindrical green body before being further compacted and cured in a hot press at the 160 oC for five (5) minutes. Then the samples were post-cured in the oven at 160 oC for four (4) hours before being tested for hardness, density, compressive strength and resistance to wear. Characterization of the raw material, especially the thermal behaviour of the palm slag, showed that it was thermally stable and suitable for use as the filler material in brake pads. The processing parameters with higher molding pressures had significant effects on the brake pad’s end properties, such as density, hardness and compressive strength of the friction composite. The result of this study also indicated that the mechanical properties of the composite material were inversely related to the size of the palm slag particles that comprise the composite. The wear rate of the friction composite was influenced by the type of filler, moulding pressures and particle size of the filler. As a conclusion, this study was determined that, palm slag could be one of the alternative fillers used in brake pad with a comparable © This item is protected by original copyright xix wear properties to the commercial brake pad products in the market. It was also found that, after a certain initial period of use, the trend of wear rate for various sliding distances was essentially constant and linear. Lastly, on road brake test was recommended to be performed for further study in the future to validate the formulation or a real application in the vehicle.

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Effect of winding speed in epoxy glass composites for new fabricated filament winding machin

2020-11-02 , Mohammad Firdaus Abu Hashim , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Farah Farhana Zainal , Meor Ahmad Faris Meor Ahmad Tajudin , Si H.M. , Si H.S. , Razani, Mohamad Syazwan Mohamad

The production of the glass fiber reinforced epoxy pipes is produced by filament winding process due to of its low costs, convenient and easy to install. The main objectives of this research is to optimize new fabricated filament winding machine and investigate the effect of winding speed. The problems for a new fabricated filament winding machine that must be optimized at first and lack of data for parameter in winding speed. The production by using filament winding process can be produce varieties of products such as tanks, pipes and vessels. The production of glass reinforced epoxy pipes of filament winding process was used different of winding speed levels. The new fabricated filament winding machine have 6 different winding speed that must be tested to get the optimum mechanical strength results. The process was stopped when the thickness of the samples is about 5.5mm wall thickness. The samples were tested with density for physical test and compressive strength for mechanical testing. The optimum winding speed to produce high mechanical strength for this new fabricated filament winding machine is winding speed two and the angle of the winding for speed 2 is 55°. This study, helps to determine winding speed for calibrate new filament winding.

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Mechanical Effect on Different Geopolymer Filler in Glass Reinforced Epoxy Composite

2024-04-19 , Mohammad Firdaus Abu Hashim , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Meor Ahmad Faris Meor Ahmad Tajudin , Mohd. Mustafa Al Bakri Abdullah , Farah Farhana Zainal , Saloma , Sulaiman I.S.

Glass reinforced epoxy are widely known in oil and gas industry as glass reinforced epoxy pipe. However, glass reinforced epoxy has limitation such as demanding careful handling due fabrication, installation and transportation because of brittle nature itself and low compressive strength. The aim of this research is to characterize and study the effect of different geopolymer filler in the glass reinforced epoxy pipe composites. Filament winding method will be used in producing glass reinforced epoxy composite. Samples will be prepared with different weight percentage of geopolymer filler loading and different types of geopolymer filler which is fly ash-based geopolymer and kaolin-based geopolymer with 10wt% - 40wt% of geopolymer filler loading. Microstructure was obtained by using Scanning Electron Microscopy showed spherical shaped of fly ash raw material and plate-like structure for kaolin raw material. After undergoes the mechanical testing involved compressive test, pipe sample of glass reinforced epoxy filled with 20 wt% of fly ash-based geopolymer filler showed the best performances above them all. The compressive strength value was 43.05 MPa. Glass reinforced epoxy composite pipe filled with different geopolymer are not widely used in this research area. Therefore, by using geopolymer as a filler can improve the properties of glass reinforced epoxy composite pipe. Hence, a waste material like geopolymer can reduce the cost of material and improve the environment.

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Interaction of geopolymer filler and alkali molarity concentration towards the fire properties of glass-reinforced epoxy composites fabricated using filament winding technique

2022 , Mohammad Firdaus Abu Hashim , Meor Ahmad Faris bin Meor Ahmad Tajudin , Md Azree Othuman Mydin , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Mohd. Mustafa Al Bakri Abdullah , Farah Farhana Zainal , Muhammad Faheem Saloma , Heah Cheng Mohd Tahir , Morteza Yong

This paper aims to find out the effect of different weight percentages of geopolymer filler in glass-reinforced epoxy pipe, and which can achieve the best mechanical properties and adhesion between high calcium pozzolanic-based geopolymer matrices. Different weight percentages and molarities of epoxy hardener resin and high calcium pozzolanic-based geopolymer were injected into the glass fiber. By manually winding filaments, composite samples were produced, and they were then allowed to cure at room temperature. To determine how well the geopolymer matrices adhere to the fiber reinforcement, the microstructure of the composites’ surfaces and perpendicular sections were examined. Maximum values of compressive strength and compressive modulus were 94.64 MPa and 2373.58 MPa, respectively, for the sample with a weight percentage of filler loading of 30 wt% for an alkali concentration of 12 M. This is a relatively wide range of geopolymer weight percentage of filler loading from 10 wt% to 40 wt%, at which we can obtain high compressive properties. By referring to microstructural analysis, adhesion, and interaction of the geopolymer matrix to glass fiber, it shows that the filler is well-dispersed and embedded at the fiber glass, and it was difficult to determine the differences within the range of optimal geopolymer filler content. By determining the optimum weight percent of 30 wt% of geopolymer filler and microstructural analysis, the maximum parameter has been achieved via analysis of high calcium pozzolanic-based geopolymer filler. Fire or elevated temperature represents one of the extreme ambient conditions that any structure may be exposed to during its service life. The heat resistance or thermal analysis between glass-reinforced epoxy (GRE) pipe and glass-reinforced epoxy pipe filled with high calcium pozzolanic-based geopolymer filler was studied by investigating burning tests on the samples, which shows that the addition of high calcium pozzolanic-based geopolymer filler results in a significant reduction of the melted epoxy.

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Pengenalan Bahan Komposit

2011 , Khairel Rafezi Ahmad , Mohd. Mustafa Al Bakri Abdullah , Che Mohd Ruzaidi Ghazali , Shamsul Baharin Jamaluddin , Mohamed Faisol Mohamed Nor , Alida Abdullah

Bahan komposit ialah satu bahan kejuruteraan yang juga dikenali sebagai ‘Bahan Termaju’ dan penggunaannya semakin meluas pada masa kini. Perkara-perkara asas seperti jenis, sifat, kaedah penghasilan dan contoh aplikasi bagi bahan komposit dibincangkan di dalam buku ini. Buku ini juga menerangkan secara terperinci tentang bahan komposit seperti komposit matriks polimer, komposit matriks logam, komposit matriks seramik dan komposit matriks simen. Dengan terhasilnya penerbitan buku ini, diharapkan dapat membantu dan menarik minat pembaca yang ingin mengetahui lebih lanjut tentang bahan komposit dalam meningkatkan pemahaman terhadap asas-asas komposit atau bahan termaju dalam kejuruteran bahan.

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Optimization of soaking time for graphitization of oil palm trunk waste

2023 , Norizah Abd Karim , Muhammad Mahyiddin Ramli , Che Mohd Ruzaidi Ghazali , H. S. S. A. Syed , R. M. S. Syah

Synthetic graphite was synthesized from oil palm trunk chip in controlled heating condition or pyrolysis process. The soaking time was varied in the range of 2.5 hours, 3 hours, and 3.5 hours. While the heating rate and heating temperature was constant at 20 °/min and 500°C accordingly. After heat treatment process, the samples were characterized by X-Ray Diffraction (XRD) and analyzed using X'Pert Highscore Plus software. Synthetic graphite phase was analyzed by XRD and it was further supported by Fourier Transform Infrared (FTIR) Spectroscopy analysis to verify existence of functional group. The morphological study was carried out by using Scanning Electron Microscope (SEM). Based on the analysis, it was confirmed that synthetic graphite was successfully synthesized at 3hours soaking time with 500 °C and 20 °/min heating rate. Synthetic graphite was observed in the form of amorphous carbon based on the XRD diffraction pattern that match with the reference code of 00-041-1487.

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Low temperature synthetic graphite from oil palm trunk waste via pyrolisis process

2020 , Norizah Abd Karim , Muhammad Mahyiddin Ramli , Che Mohd Ruzaidi Ghazali , C A I Nadia , G Denesh

Synthetic graphite was produced from oil palm trunk chip in lower heating temperature via pyrolysis process. The heating rate (10 °/min and 20 °/min) were varied whilst the heating temperature at 500 °C was fixed. All of the samples produced after heat treatment process were characterized by X-Ray Diffraction (XRD) and the diffraction pattern obtained analyzed using X’Pert Highscore Plus software to affirm the phase analysis. To ensure the graphitic nature of synthetic graphite produced, RAMAN analysis was conducted. Morphological study of the synthetic graphite produced involved scanning electron microscope (SEM) analysis. From the investigation, the results show, confirmation that synthetic graphite was successfully synthesized at the heat treatment of 500 °C (20 °/min heating rate) with fixed soaking hours. Synthetic graphite produced matched with XRD reference code of 00-041-1487. Analysis of RAMAN confirm the formation of D, G and 2D peaks at the respective wavenumber of 1250 cm-1, 1625 cm-1 and 2700cm-1.

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Asas Polimer

2010 , Che Mohd Ruzaidi Ghazali , Sinar Arzuria Adnan , Yusrina Mat Daud , Luqman Musa , Mohd. Mustafa Al Bakri Abdullah

Buku asas polimer merupakan sebuah buku yang membincangkan beberapa perkara asas yang utama dalam bidang polimer. Kebanyakan kita mengetahui tentang polimer tetapi tidak pada asas dan sifat semulajadi bahan polimer tersebut. Polimer kini lebih bernilai dan diperlukan dalam bidang binaan, angkasa lepas, komunikasi, pembuatan, pengangkutan, perubatan dan lain-lain keperluan harian. Polimer yang wujud secara semulajadi termasuklah bahan yang kita guna sebagai tar, syelek, getah pokok dan lain-lain menuntut kepada kita untuk memahami dengan lebih jelas ciri-ciri dan sifat bahan polimer. Buku ini dapat memenuhi keperluan dan minat terutamanya pelajar-pelajar untuk memahami dengan lebih mendalam lagi mengenai asas-asas dan sifat-sifat bahan polimer. Tajuk-tajuk yang dibincangkan di dalam buku ini disusun dan dioleh degan cara yang mudah untuk pengajaran dan pembelajaran tentang asas-asas polimer. Buku ini sesuai dijadikan sebagai bahan rujukan asas pelajar-pelajar kejuruteraan bahan, kejuruteraan polimer, teknologi polimer dan sains. Ia juga merangkumi beberapa subjek asas yang penting dalam bidang polimer termasuk kimia polimer, struktur fizikal polimer, reologi polimer, aplikasi, sifat dan pengujian polimer.

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Mechanical effects on different solid to liquid ratio of geopolymer filler in epoxy resin

2021 , Mohammad Firdaus Abu Hashim , Che Mohd Ruzaidi Ghazali , Yusrina Mat Daud , Meor Ahmad Faris bin Meor Ahmad Tajudin , Saloma Hasyim , Muhammad Taqiyuddin Lokman , Farah Farhana Zainal , Mohd. Mustafa Al Bakri Abdullah

Geopolymer is formed from the alkali activation of materials rich in Si and Al content with the addition of a silicate solution to enhance the properties of the materials. This paper presents research on the mechanical properties of fly ash-based geopolymer filler in epoxy resin by varying different solid to liquid ratios using sodium hydroxide and sodium silicate as the alkaline activator. However, the common problem observed from the solid to liquid ratio is the influence of curing time and compressive strength of geopolymer to have the best mechanical property. The mix design for geopolymers of solid to liquid ratio is essential in developing the geopolymer’s mechanical strength. A series of epoxy filled with fly ash-based geopolymer materials with different solid to liquid ratio, which is prepared from 0.5 to 2.5 solid to liquid ratio of alkaline activator. The tensile strength and flexural strength of the epoxy filled with fly ash-based geopolymer materials is determined using Universal Testing Machine under tensile and flexural mode. It was found that the optimum solid to liquid ratio is 2.0, with the optimum tensile and flexural strength value. However, both the tensile and flexural properties of epoxy filled with fly ash-based geopolymer suddenly decrease at a 2.5 solid to liquid ratio. The strength is increasing with the increasing solid to liquid ratio sample of geopolymer filler content.

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